Wood-burning furnace



FIG. 1 is a front elevational view of a wood-burning _furnace showing my new design;

FIG. 2 is a side elevational view thereof;

FIG. 3 is an elevational view thereof from the side _opposite that shown in FIG. 2;

FIG. 4 is a rear elevational view thereof;

FIG. 5 is a top plan view thereof;

FIG. 6 is a bottom plan view thereof; and

FIG. 7 is a front perspective view illustrating the _top and one side thereof; and

FIG. 8 is a rear perspective view illustrating the _bottom thereof and the side opposite that shown in FIG. 7. 

The ornamental design for a wood-burning furnace, substantially as shown and described. 